磁性材料及器件第54卷第3期2023年5月•100•低副瓣微带天线设计米添,陈森,王娇妮,张涛,任家怡(中国电子科技集团公司第二十九研究所四川省宽带微波电路高密度集成工程研究中心,四川成都610036)摘要:针对传统低副瓣天线工作带宽窄的问题,设计了一种应用于低副瓣天线阵列设计的新型宽带微带天线单元。通过采用H型槽耦合馈电方法,天线单元工作带宽达到11%以上。同时,为实现天线阵列的宽频带工作特性,对宽带馈电网络进行了专门设计。馈电网络采用串、并结合的馈电方式,利用阻抗变换节实现所需要的天线单元馈电幅相分布。基于所设计的天线单元和馈电网络,设计了一种基于道尔夫-切比雪夫电流分布的C波段微带天线阵,并对天线进行了加工、测试。测试结果表明,所设计的天线具有低副瓣、窄波束、高增益的特性,天线的旁瓣电平抑制大于20dB。关键词:宽频带;H槽耦合;低副瓣;串馈中图分类号:TN82文献标识码:A文章编号:1001-3830(2023)03-0100-05DOI:10.19594/j.cnki.09.19701.2023.03.017著录格式:米添,陈森,王娇妮,等.低副瓣微带天线设计[J].磁性材料及器件,2023,54(3):100-104.//MITian,CHENSen,WANGJiao-ni,etal.Designoflow-sidelobemicrostripantenna[J].JournalofMagneticMaterialsandDevices,2023,54(3):100-104.Designoflow-sidelobemicrostripantennaMITian,CHENSen,WANGJiao-ni,ZHANGTao,RENJia-yiTwenty-ninethInstitute,SichuanProvinceEngineeringResearchCenterforBroadbandMicrowaveCircuitHighDensityIntegration,ChinaElectronicTechnologyGroupCorporation,Chengdu610036,ChinaAbstract:Inordertosolvetheproblemofnarrowoperatingbandwidthoftraditionallow-sidelobeantennas,anewbroadbandmicrostripantennaelementisdesignedforlow-sidelobeantennaarraydesign.ByadoptingtheH-slotcouplingmethod,theworkingbandwidthoftheantennaelementreachesmorethan11%.Atthesametime,torealizethebroadbandoperationcharacteristicsoftheantennaarray,thebroadbandfeedingnetworkisspeciallydesigned.Thefeedingnetworkadoptsthecombinationofseriesandparallelfeedingmode,antheimpedancetransformationsectionisusedtorealizetherequiredamplitudeandphasedistributionoftheantennaelementfeed.Basedonthedesignedantennaelementandfeedingnetwork,aC-bandmicrostripantennaarraybasedonDolph-Chebyshevcurrentdistribution...